Top roll pressure mechanism



INVENTOR.

2 Sheets-Sheet 1 C. WALSH TOP ROLL PRESSURE MECHANISM Filed May 1, 1939 izzzz'sfo,o%e M/ flmwm ATTORNEYS.

Julie 4, 1940.

c. WALSH June 4, 1940.

TOP ROLL PRESSURE MECHANISM Filed May 1, 1939 2 Sheets-Sheet 2 uvmvm. rzisvop %e/' Mf By A mmvays.

Patented June 1, 1940 UNITED} STATE 'ror no-LL rnrssnan MECHANISM Christopher Walsh, Pawtueket, R. 1., assignor to H & B American Machinefl'ompany, a corporation of Maine Application May 1, 1939, seria no. 270,969

11 Claims. (orig-13s) This invention relates to textile drafting ma chines, such as Speeders, spinning and analogous machines, and more particularly to an improve- .ment in the fulcrum and its support for sustain- 5 ing the usual weighted lever of the stirrup for the pressure system for the top roll saddles; and has for one of its objects the adjustment of the {fulcrum into diiferent adjusted positions to compensate for the changes in the settings of the draft rolls and/or the adjustment-of the stirrup.

Another object of the invention is the provision of an adjustable support for the fulcrum of the weight lever in which both the support I and the fulcrum of the lever may be readily 20 manually adjustable means for sustaining the fulcrum of the weight lever and capable of being readily moved and set into the adjusted position required without the use of tools and Without loosening and tightening of a clamping bolt.

"25 Another object of theinvention is to provide a support means forv the fulcrum of the Weight lever capable of being readily moved into adjusted positions by a. manual pulling or pulling movement H to change its position relative to the roller beam. 30 Another object of the invention is to provide a slidable fulcrumsupport for sustaining the weight lever adapted to be readily pushed or pulled into various required adjusted positions and capable .of being self-locking therein upon removal of the 35 applied manual force for effecting its movement to such position. l

Another object of the invention is to provide a slidable support of the above character for the fulcrum of the weight lever capable of being i 0 readily lengthened or shortened relative to the roller stand for varying the position of the ful- .crum to compensate for all adjustments of the stirrup and/or changes in the roll settings so as to maintain the required relation between the fulcrum and such parts in which the locking of the fulcrum support in its various adjusted positions or its release therefrom for slidingmovement may be had by a tilting operation.

v With these and other objects in View, the in- 50 vention consists of certain novel features of conshifted bodily as a unit relative to the usualroller my improved adjustable slide bracket forthe fulcrum "of theweight lever, and showing the usual drawing rolls positioned in their wide settings; Fig. 2 is a transverse sectional View of the general machine shown in Fig. 1 but showing the frontsaddle memberrepresented in Fig. 1 located in a different adjusted position and carryinga shorter rear saddle member in reversed position to that of the rear saddle shown in Fig. 1 with the weight and the fulcrum at different positions on the weight lever, and also showing 1 the drawing rolls as moved into a closer setting with the slidable bracket and the fulcrum for the weight lever moved into a proper positionfor compensating for the adjustment in 5 the roll settings;

Fig. 3 is a perspectiveview of the locking block for detachably securing the adjustable slide bracket in its various adjusted positions; and

Fig. 4 is a perspective view of the slidable Q0 bracketwhich carries the fulcrum element for sustaining the weight lever.

In certain classes of textile machines, such as speeders, spinning and similar machines, it is the U usual practice to provide a weighting device for applying the required pressure on the top rolls;

one usual form ofv device for this purpose comprises agtop roll saddle, a stirrup having its upper ende'ngaging the saddle, and a weight w carrying lever for applying the required pull on .ing theweight lever, however, has proven objectionable owing to the necessity of making adjustments in the roll settings and of relocating the fulcrum and the stirrup positions so as to compensate for the various adjusted position of theroll spacing but, owing to the fixed and 40 definite position ofthe fulcrum in the previous weighting systems, no"provision was made "for such adjustment of the fulcrum, and inorder to, overcomethese prior difficulties above noted and to obtainthe above mentioned advantageous results, Thave provided a simple and improved fulcruming arrangement for sustaining the Weight lever, in which I mount the fulcrum element on a slidable bracket which is rockably arranged on a fixed support, preferably the usual roller beam, and this slide is so mounted thereon as to be manually adjustable into various rearwardlyextended adjusted positions for providing acompensating adjustment in the position of the a fulcrum. element-when the settings of the draft 8B rolls are changed; and I also provide retaining means for holding the slide locked in its adjusted locations which comprises a locking block having a portion extending over the top surface of the slide racket in which the opposed surfaces of the locking block and the fulcrum support bracket respectively are provided with means having interlocking engagement with each other and consisting of serrations of saw-teeth adapted to co-act-with each other upon tilting movementof the fulcrum support bracket in one direction to retain the same in adjusted position, and in which release of the bracket for. sliding move-...

ment into a different position whereby adjustment of the bracket to and fro laterally of the roller beam may be readily obtained without the use of tools and simply by a manual tilting movement of the bracket in another direction .to release the bracket from its locked position for free sliding movement; and the following is a more detailed description of the present embodi- .ment of this invention, illustrating the preferred "means by which these advantageous results may be accomplished.

usual roller beam of a speeder or a spinning frame,

QIn the drawings; I0 generally designates the having suitably mounted on its topsurface a plu- .rality of rollerstands I2, in the present instance a portion of one being shown, on which are Lmounted thelower drawing rolls l3, Ba and I32),

which are, suitably journaled for rotation in the usual adjustable bearing blocks 14, Ma and Mb pn'the roller stand for changing at will the relative spacings between the bottom rolls, as is well known construction in the art. Disposed above the bottom rolls l3 are the usual top rolls l5,

.l5a and, IE1), which are rotatably mounted on adjustable cap bar nibsl6 suitably carried on the usual cap bar 18. The pressure on the top rolls is applied by the usual compound pressure saddle consisting of a front saddle 19, which is fitted by means of a concave bearing to the neck of the. forwardly disposed top roll I5, and a back ,isaddlelll which is adjustably mounted on the front saddle 19 and when adjusted and set relative thereto J transmits the pressure only to the intermediate top roll 15a and the back top roll 15b. An adjusting bolt 2| rotatably carriedby lalprotuberance 22 on the front saddle l9 has threading engagement within a-suitable threaded sleeve portion 23. at the top end of theusual stirrup member 24 for adjustment of the same relative to the saddle so as to change the position of engagement of the knife edge 25 depending from the underside of the stirrup sleeve 23, by

means of which pressure is applied to the front top roll saddle. ,is 'pivotally connected to the usual Weight lever '26 by means of a pivotpin 21,

The lower end of the stirrup 24 I .When the pairs of drawing rolls l3, l5; I311,

'il5aand I31), I51) are adjusted to provide closer roll. settings, asfdepic'ted in Fig. 2, then the ."us'ual rear saddle member 20 is replaced by a :suspendedirro the ree endi-ofithe :we htalever 26 by means of a link hook 32 acts to apply the required pull on the stirrup. The link 32 is suspended from one of several deep notches 33 adjacent the free end of the longer lever arm. of the weight lever 26 to transmit thereto the desired weighting pressure which in turn is transmitted through the stirrup to the top roll saddles l9 and 20 respectively.

The" fulcrum eye 3|) is mounted in an upright position for sustaining theweight leverfor rock ing movement and comprises a lower threaded stud portion 34 which is adjustably secured in place Within an internally threaded boss 35 upstanding from the top surface of a slide bracket generally designated 36, which is adjustably mounted on the roller beam ll] of the textile machine for sliding movement laterally of the rollerbeam and the draft rolls into different adjusted positions for positioning the fulcrum eye 30 in a position to compensate for adjustments in the roll settings. A locking block 31 rigidly secured to the roller beam of the machine by means of a clamping bolt 38 has detachable engagement with the slide bracket 36, as will be hereinafter described, forretaining the bracket in adjusted positions;

Referring to Fig. 4,.the slide bracket 36 is shown in detail and consists of a U-shaped body having a pair of elongated parallel arms 39, the top surfaces of which over a substantial portion thereof are transversely corrugated or serrated to provide a series of saw teeth 40 which are selectively engageable upon longitudinal shifting movement of the slide 36,with another set of similarly shaped corrugations of saw-teeth 4| formed on the bottom surface of each of the arms 42 of the bifurcated locking block 31.

As shown in Fig. 3, the locking block 31 is of generally T-shaped form having a narrow shank portion 43 which is normally received in the elongated space between the opposed: arms 39 of the slide and serves to guide the slide during its adjustment laterally of the roller beam upon re leaseof the teeth on the slide from interlocking engagement with the teeth carried by the arms 42. of the locking blockl The arms 42 of the locking block-are integral with itsshank portion and they normally extendlongitudinally over the top of the arms 39 of the slide bracket in the assembled position of the parts. The height of the shank 43 is made suflicient toprovide a slight clearance between the top of the slide and the arms to permit rocking or tilting movement of the, slide 36 upwardly and downwardly about the shank for effecting a locking engagement of the slide with the blockwhenthe slide is raised and its release upon being depressed to-disengage the teeth and'free the slide for longitudinal shifting movement into its desiredadjusted positions.

The operation of the device will be apparent from the foregoing "disclosure: When it is desired to adjust the fulcrum element so as to position the same in its correct position relative to the stirrups andthe rolls after adjustment of roll settings from their wide setting to various degrees of closeness, or vice-versa, the rearwardly ex.-

slide bracket 36; thusfreed from th block, is

then shifted forwardly or rearwardlyas desired by a pulling or a pulling movement. Thus the :slide ispulled forward toward the roller beam q'r m e at rferfclqse sett n s. Qf-tMfQllg hilfi in its adjusted position with the fulcrum in its rearward shifting movement of the slide serves to position the fulcrum for compensating for the wider spacings of the rolls. To retain the slide required position, theimanual pressure exerted on the slide 36 to shift the same is withdrawn, whereupon the action of the weight 31 will lift up the extended end of the slide bracket carrying the fulcrum to cause interlocking engagement of the serrations or saw teeth 40 and 4| and firmly secure and retain the slide in its adjusted position.

By means of my simple adjusting arrangement it is therefore possible for the operator to make the necessary adjustments of the fulcrum and theweight lever to obtain the proper position of these parts without the use of tools or of the necessity for bolts. By utilizing a construction of this type I am able to bodily shift the weight lever, the stirrup and the fulcrum to various positions for compensating forthe adjustments in the roll spacings without changing the leverage of the weighting system or the weighting pressure employed and applied tothe top rolls. Furthermore, by means of this construction I am also able to maintain the line of pressure action of the stirrup in. a plane substantially parallel to the respective vertical planes containinglthe longitudinal axes of each pair of upper and lower draft rolls in all adjusted positions of the fulcrum and its slide support. In other words, the line of action of the stirrup will be maintained at substantially right angles to the general plane of the saddles for all positions of adjustment of the stirrup and the fulcrum of the weight lever.

The foregoing description is directed solely toward the construction illustrated, but I desire it to be understood that Ireserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim: 1. In a top roll pressure apparatus in a textile or analogous machine, the combination with a stirrup connected at one end to a weight lever and a front pressure saddle connected to the other end of the stirrup resting on the front top roll, of a fulcrum element on which the Weight lever is hinged for pivotal movement, a fixed support, a tiltable slide on said support supporting said fulcrum element, said slide being manually shiftable transversely relative to' said support into different adjusted positions thereon when tiltedin one direction and slid on the support, and means for detachably securing saidslide in its various adjusted positions, said means being provided with a tooth to engage a similar formation upon the slide tohold the sarne flxed whenthe latter is released and tilted in a different direction from that for normally effecting the release and manual shifting movement of the slide with respect to the support. a

2. In a top roll pressure apparatus in a textile or analogousmachine, the combination with a stirrup: connected at one end to a weight lever and a front pressure saddle connected to the rection relative to said support into different adjusted positions thereon when tilted in one direction and slid on the support, and a locking member for detachably securing said slide in its various adjusted positions said locking member being provided with a serrated portion having interlocking engagement with cooperating serrations on the slide to hold the same fixed when the latter is released and tilted in a different direction from that for normally effecting the release and manual shifting movement of the slide with respect to the support. 1

3. In combination in atextile drafting machine, relatively adjustable pairs of top andbot tom draft rolls, a top roll pressure device for applying pressure to a plurality of top rolls comprising afront saddle member resting on two of the top rolls a front saddle member having fulcruming engagement with said rear saddle member and resting on the front top roll; a stirrup hung from said front saddle and extending generally downwardly therefrom between adjacent pairs of draft rolls, a weight lever pivoted to the lower end of said stirrup and having an arm portion for rocking on a fulcrum element, a roller beam, a fulcrum element pivotally engaging said arm portion of the weight lever and positioned below said draft rolls for supporting the weight lever, a rockable slide carrying said fulcrum element and adapted to be adjusted by being rocked downwardly and shifted laterally of saidroller beam so as to be slid in an extended position relative thereto for positioning the fulcrum member into different positions of adjustment and locate the fulcrum in its correct position relative to the setting of the draft rolls and at substantially right angles to the line of action of the stirrup without changing the pressure on the top rolls, and a locking member fixedly secured to said roller beam and having a serrated portion engageable with a serrated portion on said slide upon rocking movement of the slide in an upwardly direction when the manually applied force for actuatingthe slide is withdrawn. i

4. In a top roll saddlemechanism, the combination with aweighted lever for a top roll saddle, of a support, a slide on said support movable transversely of the support into different selected adjusted positions, a fulcruming member for sustaining said lever carried by and movable with said slide, and means associated with the support detachably securing theslide in all adjusted positions, said securing means and said slide being provided with cooperating portions having interengaging formations, said slide being capable of rocking movement in one direction to effect disengagement of said formations for permitting the adjustment of the slide transversely of the support, and when positioned in an adjusted position being rockable in another direction to effect interengagement of said formations for maintaining the slide in such adjusted position when said lever is sustained by the fulcruming member.

5. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a support, a slide on said support movable transversely of the support into different selected adjusted positions, a fulcruming member for sustaining said lever carried by and movable with said slide and a member fixedly secured to said sup-port against movement relative to the same and positioned thereon for detachably securing and retaining the slide in all adjusted positions, said last-named member and said slide being providedwith cooperating-portions having inter-engaging formations, said slide being. rockable in one. direction" to *effect disengagement of said formations, and being rockable in the opposite direction to effect interengagement of the said formations when said lever is sustained by the fulcruming member.

6. In atop roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a support, a slide on said support movable transversely of the support-into different selected adjusted positions, a fulcruming member for sustaining said lever carried by and movable with said slide, and means associated with the support detachably' securing the slide in all adjusted positions, said securing means and said slide being provided withcooperating portions having interengaging formations, said formations being separable upon relative movement of the parts on which they are located when moved in a direction substantially atright angles to the direction of the transverse adjustment of the slide relative to the support.

'7. In a top roll saddle mechanism, the combination with a weighted lever for a top roll saddle, of a fixed support, an upstanding fulcruming member for said lever, a shiftable member on which said fulcruming member is supported and movable with the shifting movement of the support, said shiftable member being movable transversely of said fixed support, the arrangement of said shiftable supportmember being such that it is capable of rocking movement in an up and down direction relative to said fixed support to effect either the connection or the release of said shiftable member with respect to the fixed support, said shiftable member when disconnected from said fixed support being manually shiftable transversely of the fixed support 7 into different rearwardly-extended positions relative thereto for positioning the fulcruming member in different horizontally adjusted positions, and means associated with said fixed support for retaining and detachablysecuring the shiftable fulcrum-carrying member in all adjusted positions, said retaining means and said shiftable member having cooperating interengaging toothed formations.

8. In a top roll saddle mechanism, the combination with a front top roll, of a front saddle member resting on the front 1301311011, a stirrup hung from said front saddle and adjustably fulcrumed thereon for applying weight thereto, a weighted lever supported by said stirrup, a fulcruming member for sustaining said lever, a support, a rockable slide on said support adjustable transversely of the support into different selected adjusted positions, and means for detachably securing and retaining said slide in all adjusted positions, said means being provided normal effect of the weighted lever.

with --cooperating -por-tionshaving interengaging toothed formationsformaintaining-the slide in its "adjusted'position when said lever is sustained by the fulcruming member, said formations being maintained ininterengaging relationship by the 9."In a top-roll saddle mechanism, thecombination with aweightedlever-for a top roll saddle, of a support, a slide on said support movable transversely of the support into different selected adjusted positions, a fulcruming member for sustaining said lever carried by and movable-with said slide; and' amember on said-support having'apart positioned aboveand overly ing the slide for 'detachably. securing and retaining a the slide in all adjusted positions, said overlyingpart of the last-named member and said slide being provided "with-cooperating portions having interengaging' formations, said slideibeing rockable downwardly to effect disengagement of saidformations', and being rockable-upwardly to effect interengagement- Off the said formations when said lever is sustained by the fulcruming member, said formations being maintained in interengaging relationshipby the of the'weighted' lever.

, 10. In a top roll saddle mechanism,-the combination with aweighted lever for atop roll saddle, of asupport,a bifurcated slide onsaid support movable transversely of the support into different selectedadjusted positions, a fulcrumingmember for-sustaining said lever carled by and movable with saidslide, said slide being rockable on the support toward and from the same, and a retaining member for saidslide xed on'the support andembraced on opposite sides by the bifurcated parts of said slide and being; provided with spaced arms extending over the tops of such bifurcated parts of the slide, said arms and said bifurcated parts of'the slide being providedwith cooperating portions having internormal effect engaging toothed formations, said-slide being rockable downwardly to effect disengagement of said formations for permitting adjustment of the slide transversely. of the support, 7 and being rockable in an upwardly direction to effect interengagement. of said formations when the slide is positioned in an adjusted position and with the weighted lever in a sustained position by the fulcruming member, said formations being maintained in interengaging relationship by the normal effect of the weighted'lever.

11. A slide for use in atop roll saddle weighting mechanism for sustaining the usual weighted lever comprising a bifurcated member, said member having a slot and two parallel arms each of which is provided with a portion having a toothed formation, and means for threadingly mounting a fulcruming member for the weighted lever.

* CHRISTOPHER WALSH. 

